Find the value of x for which abcd must be a parallelogram

a) 9
b)18
c) 1
d)2

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9